Replaced argp support for platforms that support it

Argp is really useful, but it's not mandatory.

tests/CMakeLists.txt

@@ -1,5 +1,7 @@
 project(tests C)
 
+find_package(Argp)
+
 set(TORTURE_LIBRARY torture)
 
 include_directories(
@@ -14,13 +16,14 @@ include_directories(
 )
 
 # create test library
-add_library(${TORTURE_LIBRARY} STATIC torture.c)
+add_library(${TORTURE_LIBRARY} STATIC cmdline.c torture.c)
 target_link_libraries(${TORTURE_LIBRARY}
     ${CMOCKERY_LIBRARY}
     ${LIBSSH_STATIC_LIBRARY}
     ${LIBSSH_LINK_LIBRARIES}
     ${LIBSSH_THREADS_STATIC_LIBRARY}
     ${LIBSSH_THREADS_LINK_LIBRARIES}
+    ${ARGP_LIBRARIES}
 )
 
 set(TEST_TARGET_LIBRARIES

tests/cmdline.c

@@ -0,0 +1,67 @@
+#include "config.h"
+#include "torture.h"
+
+#ifdef HAVE_ARGP_H
+#include <argp.h>
+
+const char *argp_program_version = "libssh test 0.2";
+const char *argp_program_bug_address = "<csync-devel@csync.org>";
+
+static char **cmdline;
+
+/* Program documentation. */
+static char doc[] = "libssh test test";
+
+/* The options we understand. */
+static struct argp_option options[] = {
+  {
+    .name  = "verbose",
+    .key   = 'v',
+    .arg   = NULL,
+    .flags = 0,
+    .doc   = "Make libssh test more verbose",
+    .group = 0
+  },
+  {NULL, 0, NULL, 0, NULL, 0}
+};
+
+/* Parse a single option. */
+static error_t parse_opt (int key, char *arg, struct argp_state *state) {
+  /* Get the input argument from argp_parse, which we
+   * know is a pointer to our arguments structure.
+   */
+  struct argument_s *arguments = state->input;
+
+  /* arg is currently not used */
+  (void) arg;
+
+  switch (key) {
+    case 'v':
+      arguments->verbose++;
+      break;
+    case ARGP_KEY_ARG:
+      /* End processing here. */
+      cmdline = &state->argv [state->next - 1];
+      state->next = state->argc;
+      break;
+    default:
+      return ARGP_ERR_UNKNOWN;
+  }
+
+  return 0;
+}
+
+/* Our argp parser. */
+/* static struct argp argp = {options, parse_opt, args_doc, doc, NULL, NULL, NULL}; */
+static struct argp argp = {options, parse_opt, NULL, doc, NULL, NULL, NULL};
+#endif /* HAVE_ARGP_H */
+
+void torture_cmdline_parse(int argc, char **argv, struct argument_s *arguments) {
+  /*
+   * Parse our arguments; every option seen by parse_opt will
+   * be reflected in arguments.
+   */
+#ifdef HAVE_ARGP_H
+  argp_parse(&argp, argc, argv, 0, 0, arguments);
+#endif /* HAVE_ARGP_H */
+}

tests/torture.c

@@ -9,8 +9,11 @@ int torture_libssh_verbosity(void){
 }
 
 int main(int argc, char **argv) {
-    (void) argc;
-    (void) argv;
+  struct argument_s arguments;
 
-    return torture_run_tests();
+  arguments.verbose=0;
+  torture_cmdline_parse(argc, argv, &arguments);
+  verbosity=arguments.verbose;
+
+  return torture_run_tests();
 }

tests/torture.h

@@ -12,6 +12,15 @@
 #include <setjmp.h>
 #include <google/cmockery.h>
 
+
+/* Used by main to communicate with parse_opt. */
+struct argument_s {
+  char *args[2];
+  int verbose;
+};
+
+void torture_cmdline_parse(int argc, char **argv, struct argument_s *arguments);
+
 /*
  * Returns the verbosity level asked by user
  */